Global Mpox Trends

Author

World Health Organization

Published

July 28, 2025

logo

Key figures

This report provides a comprehensive summary of data from the global mpox surveillance started by WHO in 2022, and strengthened during the ongoing public health emergency of international concern (PHEIC). For information on specific topics:

Topic Relevant sections
Global distribution of clade Ib MPXV Section 2.2
Clade II, Ia, and Ib MPXV in Africa Section 3
Clade Ia and Ib MPXV in the Democratic Republic of the Congo Section 4
Global epidemiology (largely clade IIb MPXV) Section 5

For further information on the epidemiological situation in Africa, see Section 3

For further information on the epidemiological situation in Africa, see Section 3.

Values shown here are subject to case definitions used by their respective countries. For more information see Section 3.5.

For further information on the epidemiological situation in Africa, see Section 3

For further information on the distribution of MPXV clades see Section 2


1 Overview

This report provides an overview of the mpox1 epidemiological situation, based on global surveillance data reported to WHO from 01 January 2022, initiated due to the unprecedented human-to-human spread of monkeypox virus (MPXV) globally occurring in the same year.

1 On of 28 November 2022, WHO recommended using the name mpox as a new name for monkeypox. The words were used synonymously for one year as the term monkeypox was phased out. The virus causing mpox is named monkeypox virus (MPXV).

2 A summary of the geographic distribution of MPXV clades is included in Section 2.

Distinct MPXV clades and subclades are impacting diverse populations in different geographical regions, each exhibiting varied transmission dynamics2. On 14 August 2024, under the provisions of the International Health Regulations (2005), the WHO Director-General determined that the upsurge of mpox in the Democratic Republic of the Congo (DRC) and in a growing number of countries in Africa constitutes a public health emergency of international concern (PHEIC). Its spread presents a public health risk to other Member States and requires a coordinated international response.

WHO conducted the latest global mpox rapid risk assessment in June 2025. Based on the available information, the risk is assessed as follows:

MPXV clade Areas/populations affected Overall risk level3
Clade Ib Predominantly affecting non-endemic areas for mpox in the Democratic Republic of the Congo and neighbouring countries High
Clade Ia Primarily affecting endemic areas for mpox within the Democratic Republic of the Congo Moderate4
Clade II Observed in Nigeria and endemic countries in West and Central Africa Moderate
Clade IIb Associated with the global mpox epidemic first documented in 2022 Moderate

3 Possible risk levels are Low, Medium, High, and Very High

4 The situation in Kinshasa warrants specific focus and is linked to a higher risk of spread.

Please note that regardless of geographic area, epidemiological context, biological sex, gender identity or sexual behaviour, individual-level risk is largely dependent on individual factors such as exposure risk and immune status.

This report mainly focuses on confirmed cases and deaths as defined by WHO’s working case definition published in the surveillance, case investigation and contact tracing for mpox interim guidance. For countries with suboptimal testing rate, such as the Democratic Republic of the Congo, laboratory confirmed and suspected cases are both shown where possible to better describe the national epidemiological situation. Note that countries5 may use slightly different case definitions from those proposed by WHO, nevertheless all confirmed mpox cases need to have a positive laboratory test result.

5 Throughout this document, any use of the word country should be considered shorthand for a country, area, or territory


2 Summary of MPXV clades

all_clades

Phylogenetic tree of all MPXV clades

Based on phylogenetic analysis, MPXV6 is divided into two major clades: clade I (one, formerly Congo Basin clade) and clade II (two, formerly West Africa clade). Each of these clades is further subdivided into two subclades: clade Ia and clade Ib within clade I; clade IIa and clade IIb within clade II.

6 MPXV genetic sequences are routinely shared within NCBI GenBank and GISAID databases.

  • Clade Ia MPXV circulates within multiple countries in Central Africa and is associated with regular spillover from animal reservoirs with some onward human-to-human transmission. Mixing of virus sequences from these countries within the clade Ia phylogenetic tree shows cross-border movement of clade Ia viruses.

  • Clade Ib MPXV started a major outbreak in 2023 in the eastern part of the Democratic Republic of the Congo7 and is undergoing sustained human-to-human transmission in several countries.

  • Clade IIa MPXV has historically been detected primarily in animal species, with only limited human cases. However, more recently an increasing number of cases has been reported in several West African countries.

  • Clade IIb MPXV, first detected in Nigeria, has undergone extended sustained circulation within humans since at least 2016 and has caused a large ongoing outbreak from 2022 to present. During the global outbreak, it has largely been associated with transmission among men who have sex with men. This outbreak reached its highest peak in August 2022, and continues to circulate at low levels in several countries.

7 More information on the geographical distribution of clades Ia and Ib MPXV can be seen in Section 4

2.1 Imported cases and clusters of clade I MPXV

The following table summarizes the available information on reported imported cases, and where applicable, onward cases of clade I MPXV. This table includes some imported cases from countries which have gone on to report community transmission8.

8 This table is available for download in Section 7

2.2 Geographical spread of clade Ib MPXV

This section gives an overview of clade Ib MPXV distribution in affected countries, as well as imported travel related cases, in line with the recommendations of the International Health Regulations (IHR, 2005) Emergency Committee on the upsurge of mpox in 2024.



Based on the presence of clade Ib mpox cases reported in the past six weeks, a country is classified as having:

Community transmission, if:

At least one reported case has no epidemiological link to travel or contact with a traveler from a country with known mpox transmission. This classification applies regardless of the total number of cases reported.

Cases linked to travel, if all reported cases are either:

Individuals who traveled to a country with known mpox transmission, were likely exposed there, and were diagnosed upon return or arrival.

OR

Individuals who did not travel themselves but had direct contact with someone who traveled to an affected country where the exposure occurred.

Unknown:

Insufficient information is available to determine if cases are due to community transmission or linked to travel.




Based on the presence of clade Ib mpox cases reported in the past six weeks, a country is classified as having:

Community transmission, if:

At least one reported case has no epidemiological link to travel or contact with a traveler from a country with known mpox transmission. This classification applies regardless of the total number of cases reported.

Cases linked to travel, if all reported cases are either:

Individuals who traveled to a country with known mpox transmission, were likely exposed there, and were diagnosed upon return or arrival.

OR

Individuals who did not travel themselves but had direct contact with someone who traveled to an affected country where the exposure occurred.

Previously reporting cases, if:

No new clade Ib MPXV cases have been reported for a period of more than six consecutive weeks since the last case, regardless of the previous transmission classification. Transmission is in control phase.

Unknown:

Insufficient information is available to determine if cases are due to community transmission or linked to travel.


2.3 Geographical spread of clade Ia MPXV

This section gives an overview of clade Ia MPXV distribution in affected countries, as well as imported travel related cases. MPXV clade Ia is endemic in several countries in Central Africa, and is associated with regular spillover from animal reservoirs. However, like clade Ib, some sublineages of clade Ia have recently been linked to sustained human to human transmission.



Endemic:

Countries with a historical reporting of clade Ia MPXV cases, likely due to zoonotic spillover events from local animal fauna

Community transmission:

Non-endemic countries reporting ongoing local transmission, including unlinked cases affecting population groups throughout the community

Cases linked to travel:

Countries reporting cases likely infected in other countries, including instances where one to two generations of onward transmission have been reported in country, and linked to index cases.

Unknown:

Insufficient information is available to determine if cases are due to community transmission or linked to travel.



3 Situation in Africa

This section is jointly authored by the WHO Regional Office for Africa, the WHO Regional Office for the Eastern Mediterranean10 and WHO Headquarters.

10 On the African continent there are 47 Member States in the WHO African Region and seven in the WHO Eastern Mediterranean Region.

Since 1 January 2022, cases of mpox have been reported to WHO from 31 Member States across Africa. As of 20 July 2025 , a total of 48 061 laboratory confirmed cases, including 207 deaths, have been reported to WHO.

In the past twelve months, as of 20 July 2025, 28 countries have reported 40 509 confirmed cases, including 169 deaths. The three countries with the majority of the cases in the last 12 months are Democratic Republic of the Congo, (n = 21 464), Uganda, (n = 7579), and Sierra Leone, (n = 4876).

In the Democratic Republic of the Congo a significant number of suspected mpox cases, that are clinically compatible with mpox remain untested due to limited diagnostic capacity and thus never get confirmed11. Moreover, not all countries have robust surveillance systems12 for mpox, meaning reported case counts are likely underestimating the extent of community transmission.

11 This indicator should be interpreted with caution, as suspected mpox cases are recorded according to varying national case definitions.

12 Surveillance may also be affected by differences in case definitions across countries. These can be viewed in Section 3.5.

3.1 Outbreak status and MPXV clade distribution

The distribution of clades reported in Africa, and the outbreak status of countries on the continent is shown in the maps below. The distribution of reported mpox clades in Africa is also shown below.

Maps can be clicked to view on a larger scale.

3.2 Epidemic curves

Epidemic curve shown by week for cases reported up to 20 Jul 2025. The most recent weeks presented in the epidemic curves should be interpreted with caution, as there are delays associated with reporting.

3.2.1 Confirmed cases

The following epidemic curve shows the number of confirmed cases by week for countries in Africa. Use the dropdowns to select the time range and countries to display.

In the Democratic Republic of the Congo, a small number of cases are not represented on epidemic curves due to missing dates.

3.2.2 All cases in the Democratic Republic of the Congo

All cases, including suspected and lab confirmed cases are shown from 2024. We exceptionally highlight the Democratic Republic of the Congo due to the testing shortage in country, where only a third of cases in 2024 were tested.


3.3 Maps

Maps can be clicked to view on a larger scale. Note that data are only shown for Africa - data from elsewhere are reflected in the global sections of the report.

3.4 Data by country

Data by country is available in table format here.

3.4.1 Laboratory confirmed cases

Summary of Laboratory confirmed mpox cases
As of 20 Jul 2025
1 From 09 Jun 2025 to 20 Jul 2025
2 Confirmed mpox cases in the Democratic Republic of the Congo are based on the laboratory database shared by the Ministry of Health with WHO. Annual breakdowns exclude 494 confirmed cases with dates prior to 2024 or with missing date information. Confirmed deaths for 2024 are based on summary reports from the Ministry of Health. For 2025, confirmed deaths are sourced from the clinical management database, also shared by the Ministry of Health with WHO, which includes data on confirmed mpox patients treated at designated mpox treatment centres.

3.5 Case definitions

This section includes the national case definition used in African countries in order to provide more context for the interpretation of data, especially of suspected cases.

Case definitions for suspected cases are shown for the following countries below:


4 Situation in the DRC

Here, we exceptionally present an overview of the ongoing situation in the Democratic Republic of the Congo, in agreement with the national Ministry of Public Health.

The current spread of mpox in the Democratic Republic of the Congo is attributed to two increasingly interspersed outbreaks:

  • The spread of clade Ia MPXV, largely in endemic provinces of the country15, and

  • The spread of clade Ib MPXV, which emerged in 2023 in the South Kivu province16.

15 Endemic provinces are: Equateur, Sankuru, Tshuapa, Tshopo, Nord Ubangi, Bas Uele, Sud-Ubangi, Mongala, Kwilu, Maindombe, and Maniema, where in the DRC, an endemic area is considered to be one which has reported mpox cases for at least five consecutive years.

16 Cases of clade Ib MPXV have been detected in Haut Katanga, Ituri, Kasai, Kinshasa, Kongo Central, Lomami, Lualaba, Maindombe, Mongala, Nord Kivu, Sud-Kivu, Tanganyika, and Tshopo.

Clade Ia MPXV is associated with zoonotic spillover from animal reservoirs followed by some human-to-human transmission. Emerging evidence shows that human-to-human transmission has been sustained in Kinshasa since the second half of 2024. In contrast, epidemiological and sequencing information show that clade Ib MPXV is associated predominantly with human-to-human transmission.

In this section, clade distribution across provinces is based on sequencing data provided by the Democratic Republic of the Congo National Institute of Biomedical Research (INRB). Geographical representation may be incomplete, and the actual clade distribution could be broader and more nuanced than currently presented.

The report presents trends based on three key data sources:

Source Description Usage
Syndromic mpox surveillance system Data on suspected mpox cases and deaths collected via the Integrated Disease Surveillance database (IDS). Cases that are tested and are negative are not retrospectively removed once reported. Data delay of 1-2 weeks. Overall case and death numbers, and trends in cases.
Laboratory data Mpox suspected cases that are sampled and tested. Data delay varies between different provinces and the distance from the reference laboratory. Confirmed case numbers and trends in confirmed cases.
Case-based epidemiological data Detailed information about all investigated cases, including case classification based on sampling and testing. Completeness and delays vary between different provinces. Demographic characteristics of cases
Sequencing metadata Basic case-based information about confirmed cases that are sequenced. Information on the clade distribution of MPXV in the country

All surveillance data are subject to reporting delays, and data cleaning is ongoing. As a result, sub-national case counts in this section may lag behind those reported at the national level. Mpox surveillance coverage and completeness in the Democratic Republic of the Congo varies over geographic space and time, and in some cases data sources may not be fully harmonised.

4.1 Situation summary


4.2 Genomic surveillance

In this subsection, we present visualizations of sequences that are publicly available in the INRB, GISAID and Genbank databases. The latest MPXV sequence from the Democratic Republic of the Congo was sampled on 01 July 2025.

Important

When interpreting these data, it is important to note that the availability of sequences is not uniform across time and space, and that the distribution of sequences may not be representative of the true distribution of clades in the country.

Samples associated with clade Ib MPXV were first collected in late 2023 - the designation of this lineage in 2024 retrospectively classified all previously identified sequences as clade Ia MPXV (previously they would be considered clade I). Therefore, all sequences identified before 2023 are retrospectively attributable to ancestral clade Ia MPXV.

4.3 Laboratory testing

This section presents indicators related to mpox testing in the Democratic Republic of the Congo, including the proportion of suspected cases sampled and test positivity among sampled cases over time. Tests are performed by a laboratory network throughout the country using conventional PCR testing and GeneXpert PCR.

Throughout this section, sampling percentages are calculated as the number of cases sampled (based on national laboratory line list data) divided by the number of cases reported through the syndromic surveillance system for the geographic unit. Please note, since this calculation draws from two separate data sources, date misalignments may lead to discrepancies.

Test positivity is calculated as the number of positive PCR samples out of the total tested for each geographic unit.

Laboratory testing by geographic area
from 01 Jan 2024 to 13 Jul 2025
% suspected cases tested % tested cases positive
Kinshasa - 39.8%
Sud-Kivu 40.3% 66.2%
Nord Kivu - 34.5%
Endemic provinces 21.7% 55.2%

4.3.1 National level

Monthly percentages of suspected cases for whom a sample was collected and monthly percentage of confirmed cases through laboratory testing. Sampling and confirmation percentages follow the same calculation methods described above. Positivity rates are based solely on national laboratory line list data. Wider confidence intervals indicate smaller sample sizes or more variable positivity18 19.

18 Confidence intervals are calculated via the binomial distribution.

19 The decrease in the proportion of cases sampled after the PHEIC declaration in August 2024 is linked to the increase in case detection. Similarly, the decrease in the proportion of cases positive is influenced by the increase in testing after August 2024.

4.3.2 By province

Sampling percentages are not shown for Kinshasa, as all cases are sampled. Nord Kivu is excluded due to differences in syndromic case reporting over time.

Variations in positivity rates may reflect differences in disease incidence as well as sampling and testing capacity and strategy over time20 21.

20 Confidence intervals are calculated via the binomial distribution.

21 The decrease in the proportion of cases sampled after the PHEIC declaration in August 2024 is linked to the increase in case detection. Similarly, the decrease in the proportion of cases positive is influenced by the increase in testing after August 2024.

4.3.3 By province and age group

Monthly percentages of suspected cases for whom a sample was collected and confirmed through laboratory testing by age across four geographic areas in the Democratic Republic of the Congo. Sampling percentages are not shown for Kinshasa, as all cases are sampled. Nord Kivu is excluded due to differences in syndromic case reporting over time.

% suspected cases sampled and %tested cases positive by age and geographic area
from 01 Jan 2024 to 13 Jul 2025
% Suspected Cases Tested
% Tested Cases Positive
0-4 yrs 5–14 yrs 15+ yrs 0–4 yrs 5–14 yrs 15+ yrs
Kinshasa - - - 46.4% 49.5% 66.6%
Sud-Kivu 20.7% 42.0% 43.5% 54.5% 51.8% 65.6%
Nord Kivu - - - 25.3% 25.5% 35.4%
Endemic provinces 10.9% 25.3% 28.0% 48.3% 49.8% 52.3%

4.4 Data tables

Note

Total cases and death columns reflect data for 2024 and 2025.

4.5 Maps

Distribution of cases and deaths can be explored in the Democratic Republic of the Congo at the provincial and health zone levels22. The maps are interactive and can be explored by clicking on the layers in the legend to show or hide the different layers. Note that the legend scale varies across layers.

22 Note the administrative levels of DRC are province (admin 1), health zone (admin 2) and health area (admin 3).

Note

Total cases and deaths reflect data for 2024 and 2025.

4.5.1 Provincial level

4.5.2 Health zone level

Disclaimer

The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of WHO concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted and dashed lines on maps represent approximate border lines for which there may not yet be full agreement.

4.6 Epidemic curves


4.7 Severity

Most mpox deaths in the country are not confirmed by laboratory testing and they are reported through the syndromic surveillance system. Mpox endemic provinces report the highest number of deaths and have a higher case fatality ratio (CFR) compared to recently affected provinces.

Endemic provinces are considered: Equateur, Sankuru, Tshuapa, Tshopo, Nord Ubangi, Bas Uele, Sud-Ubangi, Mongala, Kwilu, Maindombe, and Maniema

23 Confidence intervals are calculated via the binomial distribution.

Information from available sequences shows that cases in these provinces are associated with a dominance of clade Ia MPXV, although CFR may be affected by demographic factors, healthcare access, reporting practices, and comorbidities. CFR is calculated as the number of deaths divided by the number of cases, with 95% confidence intervals shown23.

CFR estimates are derived from all cases - for this reason they may be influenced by regional differences in surveillance.

Region Deaths CFR 95% CI
Endemic provinces 1698 2.5% 2.4% - 2.7%
Sud Kivu 51 0.2% 0.1% - 0.2%
Kinshasa 16 0.3% 0.2% - 0.5%
Nord Kivu 3 0.0% 0.0% - 0.1%
Age group CFR 95% CI
Endemic provinces
0-4 3.3% 3.1% - 3.6%
5-14 2.2% 2.0% - 2.4%
15+ 2.0% 1.8% - 2.2%
Kinshasa
0-4 1.4% 0.6% - 3.0%
5-14 0.2% 0.0% - 0.9%
15+ 0.2% 0.1% - 0.3%
Sud Kivu
0-4 0.2% 0.2% - 0.4%
5-14 0.0% 0.0% - 0.1%
15+ 0.2% 0.1% - 0.3%

4.8 Case demographics

This section presents the age and sex distribution of mpox cases, suspected and confirmed, in different geographic location, and aims to highlight the differences in demographics between cases reported in endemic and recently affected provinces. Data are presented from 2024, with data from recent weeks shown separately to identify any changes in transmission dynamics.

The pyramid outlined in black represents the population distribution in the different settings.

4.8.1 Age-sex pyramids by location

Suspected cases are not shown in Kinshasa, as nearly all cases are tested.

Endemic provinces are: Equateur, Sankuru, Tshuapa, Tshopo, Nord Ubangi, Bas Uele, Sud-Ubangi, Mongala, Kwilu, Maindombe, and Maniema.

4.8.2 Age and sex in recent weeks

The majority of cases are tested in Kinshasa, meaning there are very few suspected cases.

Endemic provinces are: Equateur, Sankuru, Tshuapa, Tshopo, Nord Ubangi, Bas Uele, Sud-Ubangi, Mongala, Kwilu, Maindombe, and Maniema.


5 Global Situation

Year Total Cases Total Deaths Countries reporting cases
2022 84 906 138 108
2023 9696 45 76
2024 26 350 78 85
2025 30 022 119 79

This section of the report includes only confirmed and probable mpox cases and deaths at a global level.

Note

Since 2022 to date, the vast majority of mpox cases are attributable to clade IIb MPXV24. The data presented here are based on the most recent complete month of data reported to WHO as of 30 June 2025.

24 Not all cases can be attributed to a specific MPXV clade. While some countries have sporadic imported cases of other clades, widespread community transmission of other clades has not been reported to WHO.

Data in this section are derived from a combination of two datasets:

  1. Aggregate case reporting, collected monthly25 and,
  2. Detailed case-based data for a subset of cases reported directly from Member States to WHO26.

25 Global aggregated data are collected through direct reporting from Member States to WHO and its partners or from official country sources.

26 Data from cases are reported according to the WHO minimum dataset under the International Health Regulations (IHR 2005) Article 6.

Where information is available, the majority of cases associated with clade IIb MPXV continue to be adult, male, and self-identified as men who have sex with men.

Globally, cases of mpox peaked in August 2022 - while significantly fewer cases are reported now, transmission of clade IIb MPXV continues globally.

5.1 Key figures

Year Total Cases Total Deaths Countries reporting cases
2022 83 937 122 96
2023 9194 38 67
2024 10 730 27 65
2025 3876 6 58
Note the case and death counts correspond to cases reported outside Africa.

5.2 Reporting summary

In 30 June 2025, a total of 31 countries outside Africa reported 426 new confirmed cases and 1 new deaths.

From January 2022 and as of 30 June 2025, detailed case data for countries outside Africa was reported for 103 089 cases, representing 67.0% of all cases reported during this period.

5.4 Global Maps